Book Image

Natural Language Processing with Java - Second Edition

By : Richard M. Reese
Book Image

Natural Language Processing with Java - Second Edition

By: Richard M. Reese

Overview of this book

Natural Language Processing (NLP) allows you to take any sentence and identify patterns, special names, company names, and more. The second edition of Natural Language Processing with Java teaches you how to perform language analysis with the help of Java libraries, while constantly gaining insights from the outcomes. You’ll start by understanding how NLP and its various concepts work. Having got to grips with the basics, you’ll explore important tools and libraries in Java for NLP, such as CoreNLP, OpenNLP, Neuroph, and Mallet. You’ll then start performing NLP on different inputs and tasks, such as tokenization, model training, parts-of-speech and parsing trees. You’ll learn about statistical machine translation, summarization, dialog systems, complex searches, supervised and unsupervised NLP, and more. By the end of this book, you’ll have learned more about NLP, neural networks, and various other trained models in Java for enhancing the performance of NLP applications.
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

What makes SBD difficult?


Breaking text into sentences is difficult for a number of reasons:

  • Punctuation is frequently ambiguous
  • Abbreviations often contain periods
  • Sentences may be embedded within each other by the use of quotes
  • With more specialized text, such as tweets and chat sessions, we may need to consider the use of new lines or the completion of clauses

Punctuation ambiguity is best illustrated by the period. It is frequently used to demark the end of a sentence. However, it can be used in a number of other contexts as well, including abbreviations, numbers, email addresses, and ellipses. Other punctuation characters, such as question and exclamation marks, are also used in embedded quotes and specialized text, such as code that may be in a document.

Periods are used in a number of situations:

  • To terminate a sentence
  • To end an abbreviation
  • To end an abbreviation and terminate a sentence
  • For ellipses
  • For ellipses at the end of a sentence
  • Embedded in quotes or brackets

Most sentences we encounter...